Liquid level gauge



FIG. 1 is a front elevational view of a liquid level gauge showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a section view thereof according to the line A--A of FIG. 2. 

The ornamental design for a liquid level gauge, as shown. 